Recently bought a house and trying to troubleshoot some water problems. It's a well system, and I've been on a well at other houses so I have a decent understanding about how they work. I feel something is up with this system. The water pressure on the upstairs floor gets pretty weak. If your taking a shower and someone flushes the toilet, you definitely feel it. If the washer machine is running your shower is going to suck. Stuff like that. You have to be careful about running more than one water appliance or the pressure gets really low. Sometimes down to a trickle. It's a 3500 sq ft house. The pressure tank is a lot smaller than other systems I've seen, I thought it was odd when I saw it (26 gallons). I thought maybe it was shot, but it's fairly new (less than 2 years old). In monitoring the cut-in and cut-out, the pump engages at about 40 psi and cuts out at 70 psi. Is it perhaps the cut-in needs to be raised? I'm not sure about the pump other than the attached picture which maybe leads me to believe it's 3/4hp? I know there is a lot more to it (flow rate, etc.) but can someone point me in the right direction? A plumber who was over for something else said something to the effect of "get a larger tank and you won't have these water pressure issues upstairs". Thanks

I have a newly installed sump pump an after heavy rains I'm seeing water coming out of both the exit pipe and the vent pipe.Is there a issue with the drainage or is it supposed to be doing this when full.